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...]] is primarily made up of [[diatomic]] gases with a composition of ~78% [[nitrogen]] (N₂) and ~21% [[oxygen]] (O₂). At 20 °C and an abs

''S. pneumoniae'' gains a substantial amount of carbon and nitrogen using [[extracellular enzyme systems]] which allow for the metabolism of po

...o large organic molecules like [[DNA]]. Examples of atomic pairs are two [[nitrogen]] atoms chemically bound to the stable dinitrogen molecule (written as N<su ...[organic chemistry]]. They occur between, for instance, hydrogen, carbon, nitrogen, and oxygen atoms and give rise to stable, recognizable, molecules. Most

...assumed to play a significant role in the biological cycles of carbon and nitrogen. From soil, by direct contact or air-borne dust, endospores can contaminate

...logists are most interested in the decay of isotopes [[carbon-14]] (into [[nitrogen-14]]) and [[potassium-40]] (into [[argon-40]]). ...diocarbon dating is carried out by measuring how much of the carbon-14 and nitrogen-14 isotopes are found in a material. The ratio between the two is used to e

...tosynthesis]] and aggravates coral tissue. Excess nutrients, such as the [[nitrogen]] inputs from development, also promote macroalgal growth. When there is no

* Fractional excretion of urea nitrogen < 35%. <ref name="pmid17900456">{{cite journal |author=Pépin MN, Bouchard

...e also very good producers of [[manure]]; their [[urine]], being high in [[nitrogen]], makes [[lemon tree]]s very productive. Their [[milk]] may also be of gre

...limits. For example, such a regulation might limit the concentration of [[Nitrogen oxide|NOx]] to 55 ppmv in a dry combustion exhaust gas (at a specified refe

...al burning but from vehicular and industrial emissions of hydrocarbons and nitrogen oxides. It appears as a brownish haze over large urban areas and is irritat ...omobiles and other vehicles. They convert the NOx emissions into gaseous [[nitrogen]] and [[oxygen]]. They also convert any gaseous [[carbon monoxide]] emissio

...al burning but from vehicular and industrial emissions of hydrocarbons and nitrogen oxides. It appears as a brownish haze over large urban areas and is irritat ...omobiles and other vehicles. They convert the NOx emissions into gaseous [[nitrogen]] and [[oxygen]]. They also convert any gaseous [[carbon monoxide]] emissio

...ef><ref>Reading Chemical Fine Print: Resolution and Identification of 3000 Nitrogen-Containing Aromatic Compounds from a Single Electrospray Ionization Fourier

...ng, the liquefaction of [[Gas|gases]] such as [[hydrogen]], [[oxygen]], [[nitrogen]], and [[helium]]), and other low-temperature processing. ...[[aromatic]]s as well as [[Organic chemistry|organic]] [[sulphur]] and [[nitrogen]] compounds and some [[oxygen]] containing hydrocarbons such as [[phenols]

...aceweb/se/Se-12-2/se122152.pdf|title=Chemical potentials and activities of nitrogen and carbon imposed by gaseous nitriding and carburising atmospheres|accessd ...ates, resulting in [[high speed steel]]. On the other hand [[sulphur]], [[nitrogen]], and [[phosphorus]] make steel more brittle, so these commonly found elem

...limits. For example, such a regulation might limit the concentration of [[Nitrogen oxide|NOx]] to 55 ppmv in a dry combustion exhaust gas (at a specified refe

...racer|2000|p=12}}</ref><ref>{{Harvnb|Sapp|1994|p=142}}</ref> Examples are nitrogen-fixing [[bacterium|bacteria]] (called [[rhizobia]]) which live in [[root no

...with [[icosahdral]] symmetry. Poliovirus is composed of carbon, hydrogen, nitrogen, oxygen, phosphorus and sulphur.

...ombarded [[boron]] with alpha particles to make a proton-rich isotope of [[nitrogen]]; this isotope emitted [[positron]]s.[http://www.sciencemuseum.org.uk/coll ...ay|alpha]], [[beta ray|beta]] and [[gamma ray|gamma]] rays, he converted [[nitrogen]] into [[oxygen]], and most importantly he supervised the students who did

...er, increasing contamination of waterways and wetlands by nutrients like [[nitrogen]] and [[phosphorus]] are of concern in many countries. * [[Nitrogen]] and [[phosphorus]] surplus in [[river]]s and [[lake]]s.

...another and as the world’s first successful “alchemist,” confirmed that [[nitrogen]] was transmuted into [[oxygen]]<ref> Nobel Biography [http://nobelprize.or